Date: Sun, 22 Oct 1995 12:38:33 -0400 From: dennis@etinc.com (dennis) To: hackers@freebsd.org Subject: Re: Bragging rights.. Message-ID: <199510221638.MAA07304@etinc.com>
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Michael Smith brags... >> > The PC16550D (The "reference" part for 16550's) is specified to a 24MHz input >> > clock. >> >> And here I always thought it was the National Semiconductor part that was >> the "reference" part, because the 16550 was originally their fault. I still > >The PC16550D _is_ the NatSemi part. It supersedes the PC16550C, and >thus the NC16550* range. The NS16550's haven't been available for >some years now, AFAIK. If you have some you bought recently, check the >fab date on them. >Likewise, which is why we fork out >$100 for these ones. (They're >absolutely everything you could ever want in a serial card; jumperable >IRQ overy every imaginable value, switch-selectable base addresses in >increments of 8 from 0x0 to 0x400, optional open-collector interrupt >outputs, jumperable DTE/DCE pinouts, 18MHz bit clock dividable by 1, 2 5 or >10... rah rah rah 8) I really can't believe you guys are bragging about the widespread utilization of souped-up async. You still don't get the fact that you're losing several hundred dollars worth of machine (which brings the cost in-line with sync) to save a few hundred on cards for a less-efficient solution. Dennis ---------------------------------------------------------------------------- Emerging Technologies, Inc. http://www.etinc.com Synchronous Communications Cards and Routers For Discriminating Tastes. 56k to T1 and beyond. Frame Relay, PPP, HDLC, and X.25
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